libcontextprovider, protocol change: Fixing the previous fix: safeguards agains emitting firstSubscriber and lastSubscriber signals unnecessarily.
libcontextprovider, protocol change: Fixing the previous fix: safeguards agains emitting firstSubscriber and lastSubscriber signals
unnecessarily.

rburchell/ck,rburchell/ck,rburchell/ck,rburchell/ck,rburchell/ck